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Alexxx [7]
3 years ago
15

What is the value of x?

Mathematics
2 answers:
sashaice [31]3 years ago
8 0

Answer:

36

Step-by-step explanation:

72+3x=180(being sum of straight angle)

3x=180_72

3x=108

x=108÷3

x=36

Charra [1.4K]3 years ago
5 0
The value of x= 36°
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Grant attended 75% of his Student Council meetings. If there were 40 meetings, how many did Grant NOT attend?
Luden [163]

Answer:

10

Step-by-step explanation:

take your total and multiply it by the percentage.

40 × .75 = 30. he attended 30 meetings. take your total and subtract your new value.

40 - 30 = 10 meetings not attended

5 0
3 years ago
Is 3/47 a rational number
lesya692 [45]
3/47 is a rational number

p/q is a rational number, where p and q are real integers, and q does not equal to 0.
8 0
3 years ago
PLS HELP ASAP!! WILL MARK BRAINLYIST
son4ous [18]

Answer:

$39,851.25

Step-by-step explanation:

If the sales increase at a rate of 9% per year, this means it will be 109% of the previous year's value since 100% + 9% = 109%

109% in decimal form = 109/100 = 1.09

Therefore, the exponential function is:

y = 20000 \cdot 1.09^x, where x is the number of years

So when x=8,  

y = 20000 \cdot 1.09^8=39851.252...

After 8 years, annual sales = $39,851.25

7 0
2 years ago
Given: cosθ= -4/5 , sin x = -12/13 , θ is in the third quadrant, and x is in the fourth quadrant; evaluate tan 1/2 θ
mrs_skeptik [129]

Answer:

Step-by-step explanation:

If you're looking for what the half angle of the tangent of theta is, I'm a bit confused as to why you think the angle in the 4th quadrant, x, is relevant.  But maybe you don't know it isn't and it's a "trick" to throw you off.  Hmm...

Anyways, the half angle identity for tangent is

tan(\frac{\theta}{2})=\frac{sin\theta}{1+cos\theta}

There are actually 3 identities for the tangent of a half angle, but this one works just as well as either of the others do, so I'm going with this one.  

If theta is in QIII, the value of -4 goes along the x axis and the hypotenuse is 5.  That makes the missing side, by Pythagorean's Theorem, -3.  Filling in our formula:

tan(\frac{\theta}{2})=\frac{-\frac{3}{5} }{1+(-\frac{4}{5}) } which simplifies a bit to

tan(\frac{\theta}{2})=\frac{-\frac{3}{5} }{\frac{5}{5} -\frac{4}{5} }  and a bit more to

tan(\frac{\theta}{2})=\frac{-\frac{3}{5} }{\frac{1}{5} }

Bring up the lower fraction and flip it to divide to get

tan(\frac{\theta}{2})=-\frac{3}{5}*\frac{5}{1} which of course simplifies to

-3.  Choice A.

6 0
3 years ago
At a local fitness center members pay a a $ 14 membership fee and $ 2 for each aerobics class. Nonmembers pay $ 4 for each aerob
mestny [16]

14+2x=4x: divide 2x on each side

14=2x: divide by 2

7=x

7

8 0
3 years ago
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